C07F9/3878 - CPC Classification

Compounds containing elements of Groups 5 or 15 of the Periodic System; Phosphorus compounds with one or more P—C bonds; Phosphonic acids RP(=O)(OH); Thiophosphonic acids, i.e. RP(=X)(XH)2 (X = S, Se) not used, see subgroups; Polyphosphonic acids containing substituents selected from B, Si, P (other than -POH groups) or a metal